John Fowler & Co Engineers from Leeds West Yorkshire England, Produced Traction Engine & Ploughing implements as well as railway equipment. 

John Fowler & Co also produced Showman's engine, Road Rollers and Ploughing Engine's.

Fowler also produced the Track Marshall Tractor which was a tracked version of the Field Marshall.

Railway Locomotives ED1 to ED7 were built by Fowler.

After John Fowler death in 1864 John Fowler & CO was continued by Robert Fowler and Robert Eddison. Then was merged with Marshall Son & Co LTD of Gainsbrough in 1947 to form Marshall - Fowler LTD. Production was Finally Ceased In early 1974.